1.1

Product marking

The stickers located on the top or bottom side of all PCBs provide product information:

•

First sticker: product order code and product identification, generally placed on the main board featuring

the target device.

Example:

Product order code

Product identification

•

Second sticker: board reference with revision and serial number, available on each PCB.

Example:

MBxxxx-Variant-yzz

syywwxxxxx

On the first sticker, the first line provides the product order code, and the second line the product identification.

On the second sticker, the first line has the following format: “MBxxxx-Variant-yzz”, where “MBxxxx” is the board

reference, “Variant” (optional) identifies the mounting variant when several exist, “y” is the PCB revision, and “zz”

is the assembly revision, for example B01. The second line shows the board serial number used for traceability.

Parts marked as “ES” or “E” are not yet qualified and therefore not approved for use in production. ST is not

responsible for any consequences resulting from such use. In no event will ST be liable for the customer using

any of these engineering samples in production. ST’s Quality department must be contacted prior to any decision

to use these engineering samples to run a qualification activity.

“ES” or “E” marking examples of location:

•

On the targeted STM32 that is soldered on the board (for an illustration of STM32 marking, refer to the

STM32 datasheet Package information paragraph at the www.st.com website).

•

Next to the evaluation tool ordering part number that is stuck, or silk-screen printed on the board.

Some boards feature a specific STM32 device version, which allows the operation of any bundled commercial

stack/library available. This STM32 device shows a “U” marking option at the end of the standard part number

and is not available for sales.

To use the same commercial stack in their applications, the developers might need to purchase a part number

specific to this stack/library. The price of those part numbers includes the stack/library royalties.

1.2

Codification

The meaning of the codification is explained in Table 2.

Table 2. Codification explanation

NUCLEO-XXYYZT

NUCLEO-XXYYZT-P

NUCLEO-XXYYZT-Q

Description

Example: NUCLEO-L452RE

XX

MCU series in STM32 32-bit Arm Cortex MCUs

STM32L4 Series

YY

MCU product line in the series

STM32L452

Z

STM32 package pin count

•

C for 48 pins

•

R for 64 pins

64 pins

T

STM32 flash memory size:

•

6 for 32 Kbytes

•

8 for 64 Kbytes

•

B for 128 Kbytes

•

C for 256 Kbytes

•

E for 512 Kbytes

•

G for 1 Mbyte

•

Z for 192 Kbytes

512 Kbytes

-P

STM32 has external SMPS function

No SMPS

-Q

STM32 has internal SMPS function

NUCLEO

‑XXXXCX NUCLEO‑XXXXRX NUCLEO‑XXXXRX‑P NUCLEO-XXXXRX-Q

Product marking

DB2196 - Rev 17

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